1.375 g of cupric oxide was reduced by heating in a current of hydrogen and the weight of copper that remained wasIn another experiment,of copper was dissolved in nitric acid and the resulting copper nitrate converted into cupric oxide by ignition. The weight of cupric oxide formed was. Show that these result illustrate the law of constant composition.
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When 1.375 g of cupric oxide is reduced on heating in a current of hydrogen, the weight of copper remains 1.098 g. In another experiment, 1.179 g of copper is dissolved in nitric acid and resulting copper nitrate converted into cupric oxide by ignition. The weight of cupric oxide formed is 1.476 g.
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